题目列表(包括答案和解析)
| 27 |
|
| 12 |
|
| 45 |
| x |
| 2xy |
| 3 | 2y-x |
| 1 |
| 5 |
| 1 |
| 2 |
| 5 |
| 12 |
| 1 |
| 2 |
| 1 |
| 3 |
| 1 |
| 4 |
| 1 |
| 5 |
| 1 |
| 2 |
| 1 |
| 3 |
| 1 |
| 4 |
| 1 |
| 5 |
| 1 |
| 2 |
| 1 |
| 3 |
| 1 |
| 4 |
| 1 |
| 5 |
| 1 |
| 6 |
| 4 |
| 3 |
| 4 |
| 3 |
| 1 |
| 1×3 |
| 1 |
| 2 |
| 1 |
| 3 |
| 1 |
| 3×5 |
| 1 |
| 2 |
| 1 |
| 3 |
| 1 |
| 5 |
| 1 |
| 5×7 |
| 1 |
| 2 |
| 1 |
| 5 |
| 1 |
| 7 |
| 1 |
| 17×19 |
| 1 |
| 2 |
| 1 |
| 17 |
| 1 |
| 19 |
| 1 |
| 1×3 |
| 1 |
| 3×5 |
| 1 |
| 5×7 |
| 1 |
| 6×8 |
| 1 |
| 6×8 |
| 1 |
| n(n+2) |
| 1 |
| n(n+2) |
| 1 |
| 1×3 |
| 1 |
| 3×5 |
| 1 |
| 5×7 |
| 1 |
| 17×19 |
| 1 |
| x(x+3) |
| 1 |
| (x+3)(x+6) |
| 1 |
| (x+6)(x+9) |
| 3 |
| 2x+18 |
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